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Finding the Fourth Proportional to 114,987.89, 158,664.47 and 66,572.57

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Solution

The fourth proportional to 114,987.89, 158,664.47 and 66,572.57 is: 91,859.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,987.89 : 158,664.47 = 66,572.57 : x
  2. Step 2: Convert to fraction form
    114,987.89/158,664.47 = 66,572.57/x
  3. Step 3: Cross multiply
    114,987.89x = 158,664.47 × 66,572.57
  4. Step 4: Simplify right side
    114,987.89x = 10,562,700,409.40
  5. Step 5: Solve for x
    x = 10,562,700,409.40/114,987.89
  6. Step 6: Final answer
    x = 91,859.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.